package day03;

public class TuoZhan {
    public static void main(String[] args) {
        int year=2000;
        if((year%4==0 && year%100!=0) || year%400==0){
            System.out.println(year+"年是闰年");
        }else {
            System.out.println(year+"年不是闰年");
        }

        int score=56;
        if(score<0 || score>90){
            System.out.println("成绩不合法");
        }else if(score>=80 && score<90){

        }else if(score>=60 && score <80){



        }else {
            System.out.println("");
        }
    }
}
